height = eval(input("请输入身高（米）："))
weight = eval(input("请输入体重（公斤）："))

bmi = weight / pow(height, 2)
print('BIM数值为：{:.2f}'.format(bmi))

dom = ''

if bmi < 18.5:
    dom  = "过轻"
elif 18.5<= bmi < 25:
    dom  = "正常"
elif 25<= bmi < 28:
    dom  = "过重"
elif 28<= bmi < 32:
    dom  = "肥胖"
else: 
    dom  = "严重肥胖"

print(dom)
